Tool-holder.



W. M. RHOADBS.

TOOL HOLDER. APPLICATION FILED MAY 21!, 1906.

Patented Ja1L 5, 1909.

A TTOR/VE Y5 UNITED STATES PATENT OFFICE.

WESLIE M. RHOADES, OF IOLA, KANSAS.

I TOOL-HOLDER.

Application filed Kay 28,

T all whom it may concern:

Be.it known that I, Wnsun M. RHOADES, a citizen of the United States, residing at Iola, in the county of Allen and State of Kansas, have invented anew and useful Tool-Holder, of which the following is a specification.

This invention relates to tool-holders for lathes and has for itsobject to provide a com aratively simple and inexpensive device of t 's character particularly designed for supporting a boring bar or other suitable tool in position on the lathe.

A further object of the invention is'to provide a holder having a pair of adjustable clamping jaws the adjacent faces of which are formed with seating recesses for the reception of the boring bar, whereby said bar may be rotated and adjusted longitudinallyv and laterally within the holder.

A still further object of the invention is to generally im rove this class of devices so as to increase t ieir utilit durability and efficiency as well as to re uce the cost of manufacture.

With these and other objects in view the invention consists in the construction and novel combination and arrangement of parts hereinafter fully described, and illustrated in the accompanying drawings, it being understood that various changes in form, proportions and minor details of construction may be resorted to within the scope of the ap ended claim.

11 the accompanying drawings forming a part of this specification: Figure 1 is aperspective view of a tool-holder constructed in accordance with my invention. Fig. 2 is a longitudinal sectional view of the same, and,

Fig. 3 is an end elevation.

Similar numerals of reference indicate corresponding parts in all of the figures of the drawings.

The improved device comprises an elongated body portion or casing 5 rovided with a lateral extension or plate 6 t e free end of which is bifurcated at 7 to form a pair of parallel arms or fingers 8 for attachment to a lathe. It will be observed'by reference to Fig. 1 that the shank is substantially commensurate in width with the length of the head, the object of this arrangement being to brace the latter throughout its entire extent and thus prevent chattering of the tool Specification of Letters Patent.

Patented Jan. 6, 1909.

1906. Serial No. 319,22}.

which would ensue if the shank were narrow and disposed intermediate of the ends of the head, as is usual. g

The casing 5 is formed with parallel side walls 9 and oppositely dis osed curved end walls 10 defining a vertical y disposed recess or socket 11 in which are mounted for vertical movement the clamping jaws 12 and 13. The adjacent longitudinal ed es of the clam ing jaws 12 and 13 are forme with angularly disposed recesses 14 and 15 for the reception of a boring bar 16, the latter being mounted for longitudinal and rotary movement between the jaws and provided at one end thereof with a reduced extension 17 carrying a cutting tool 18. The boring bar and cutter, however, form no part of the present invention and it will therefore be understood that bars and cutters of difierent sizes and hol er without departing from the spirit of the invention.

The exterior walls of the casing or body portion 5 at the opposite curved ends thereof are formed with s aced projections or lugs 19 having threa ed openings 20 formed therein for the reception of clamping screws 21 the free .ends of which are adapted to bear against the adjacent curvedwalls 22 of the clamping jaws for forcing the latter in engitgement with the boring bar. The side wa casing as indicated at 23 so as to prevent rotation and maintain said jaws in vertical alinement with each other. It will thus be seen that by rotating the screws 21 the clamping jaws 12 and 13 carrying the boring bar may be adjusted vertically within the recess or socket 11 thereby to vary the distance between the bar and the lower wall of the casing. The space screws, however, permit the' adjustment of the boring bar and clampin jaws to varying angular positions. It w' l also be observed that when the screws are loosened the boring bar may be adjusted longitudinally of the casing and rotated within the clamping jaws so as to support the cutting tool at any desiredllangle or inclination with respect to the work, said tool being locked in adjusted position by tightening the clamping screws. L

From the foregoing description it is thought that the construct'mn and operation sha es may be used in connection with thes of the clamping jaws are preferablydisposed parallel with the adjacent walls of the of the device will be readily understood by those skilled in the art and farther descri tion thereof is deemed unnecessary.

aving thus described the invention what is claimed is: 4

A tool holder comprising a casing having parallel side walls, and curved to and bottom walls, all of substantiall uni orm thickness forming a vertically e ongated socket,

a pair of interfitting clamping jaws arranged within the socket and having straight paral lel sides fitting against the side walls of the socket to preserve the jaws in parallel relation and prevent the rotative movement thereof, the upper and lower curved walls of the casing being each provided with spaced threaded o enin 's, and adjusting screws extending t roug said'openings and hearing on the jaws at points near the opposite ends of the latter, whereby said jaws may be vertically adjusted to varying horizontal positions or tovarying angles to the horizontal, the screws servmg also as means for forcing the jaws into clamping engagement with the tool.

In testimony that I claim the foregoing as my own, I have hereto aflixed my signature in the presence of two witnesses.

WESLIE M. RHOADES. I Witnesses:

J. M. NoWELL, E. M. N oWnLL. 

